JP7456226B2 - hinge cap - Google Patents

Description

The present invention relates to a stopper-type hinge cap attached to a plastic container such as a PET bottle or a glass bottle, and particularly to a hinge cap that facilitates separate disposal after use.

The plastic hinge cap, in which the cap body attached to the mouth of the bottle body and the lid body that can be opened and closed are connected by a hinge, is pressed against the outer and inner circumferential surfaces of the mouth of the glass bottle body. They are clamped together, tightly fitted together so that they cannot easily come off during use, and are integrally fixed using a plugging method.

If a plastic hinge cap like the one above is attached and fixed to a bottle body made of a material other than plastic, such as glass, the glass bottle body can be reused when used bottles are reused as material. It is necessary to separate the bottle and the plastic hinge cap for disposal or recovery, but it has not been easy to remove the hinge cap from the bottle body. For example, if you try to pull out the cap by holding it, the hinge may tear off, leaving only the cap itself, making it more difficult to remove.

Therefore, in recent years, a plastic hinge cap that is attached and fixed to the mouth of a glass bottle body can be easily removed from the bottle body for separate disposal or collection, and the hinge cap can be separated into glass and plastic. is proposed.

For example, in Patent Document 1, a hinged cap that fits into a container body in a stoppering manner is formed with a side wall extending from the lower end of the cap body to cover a skirt portion of the cap body, and the side wall is connected to the top lid via the hinge portion. an engaging part that is connected to the skirt part and that engages with the skirt part; the connecting part between the side wall and the cap body is inside the engaging part of the skirt part of the cap body covered by the side wall; Disclosed is a cap in which weakened portions are formed on both sides of the cap body, and the skirt portion of the cap body is removed by opening the top cover from the cap body, releasing the engagement portion of the side wall, and pulling the top cover upward in the axial direction of the cap. The weakened portion formed in the container is destroyed, making it possible to easily remove it from the container mouth.

This cap has an outer part and an inner part under the hinge structure, which creates a thin part in the mold and makes it difficult to cool the mold, so it is used for injection molding. Cycles become longer and production becomes less efficient. Furthermore, since the outer fragile portion is weak, if the cap is opened and closed roughly, there is a possibility that the fragile portion may be cut.

Furthermore, Patent Document 2 proposes a plug-fitting type spout that can be separated from a portion that is in close contact with the outer circumferential surface of the mouth of the bottle main body, and an outer cylinder corresponding to the end on the separation start side is proposed. It is said that a pilfer pull tab for separating the outer cylinder part is provided on the outer periphery of the cylindrical part, making it easy to start the separation process.

With this spout, when holding the pull tab for the pilfer and separating the outer cylinder part, if the bottle body and spout are small, the pull tab for the pilfer will also be small and difficult to separate. If the pull tab or tangle-preventing protrusion is made larger, there is a problem in that it becomes a hindrance during transportation or storage, and is easily damaged when dropped.

Patent No. 3353242 Japanese Patent Application Publication No. 2001-122310

The present invention is an invention based on such a request, and is a hinge cap that is integrally attached and fixed to the mouth of a bottle body made of glass or the like, and which prevents unnecessary parts from protruding to the outside and which allows the bottle to be closed. It is an object of the present invention to provide a hinge cap that can be smoothly and easily removed from a main body.

In order to solve the above problems, the present invention includes a cap body having a top plate portion and a cylindrical side wall extending vertically from the periphery of the top plate portion, and an upper lid connected to the cap body via a hinge. A hinged cap whose cap body is fitted to the tip of a container opening and is attached to a container, the top plate having an opening thin part that defines a portion that serves as a spout for contents, and the opening thin wall. An opening pull ring is provided in the vicinity of the cylindrical side wall so as to go around the outside of the opening thin part, and both ends of the opening pull ring are provided on the opposite side of the hinge and connected to the cylindrical part. A separating thin part extending vertically through the side wall and reaching the lower end, and a separating pull ring erected via a support outside the opening thin part and inside the separating thin part , A cylindrical inner ring is provided inside the cylindrical side wall and extends vertically from the top plate part, and the tip of the container mouth part is formed to fit between the cylindrical side wall and the inner ring. , the diameter of the annular portion of the thin separation portion is larger than the outer diameter of the inner ring, and the annular portion of the thin separation portion is formed outside the inner ring and inside the cylindrical side wall; The hinge cap is characterized in that the strut of the separation pull ring is connected to a portion of the top plate portion inside the separation thin portion .

In the hinge cap, the separation pull ring preferably has a larger diameter than the opening pull ring.

In the hinge cap, a spout tube is provided upright between the opening thin wall portion and the separation thin wall portion of the top plate portion, and the spout tube is located inside the pull ring for separation and is located at the opening of the top plate portion. It is preferable that the pull ring is erected on the outside of the pull ring.

In the hinge cap described above, it is preferable that the height of the separation pull ring from the top plate portion is lower than the spout tube.

In the hinge cap, it is preferable that the support of the separation pull ring is erected on the hinge side.

According to the hinge cap of the present invention, when pouring out the contents from the container, the opening pull ring can be pulled and the top plate portion can be broken along the opening thin part to form a spout. The contents can be poured out from the spout, and when discarding the contents after consumption, pull the separation pull ring and break it along the separation thin wall, breaking the cylindrical side wall along with the top plate. Since a portion of the hinge cap can be removed and the cylindrical side wall can be easily deformed and expanded, the entire hinge cap can be easily removed from the container mouth.

FIG. 1 is an external perspective view of one form of the hinge cap of the present invention. FIG. 2 is a longitudinal sectional view of one form of the hinge cap of the present invention. It is a longitudinal cross-sectional view explaining the aspect which opens the spout of one form of the hinge cap of the present invention. FIG. 3 is a longitudinal sectional view illustrating a mode in which a portion of the cap body of one form of the hinge cap of the present invention is removed. It is an explanatory view of the process of opening and removing one form of the hinge cap of the present invention. It is a longitudinal cross-sectional view which shows another form of the hinge cap of this invention.

Embodiments of the present invention will be described in detail below with reference to the drawings. Note that the present invention is not limited to the embodiments described below. Further, in the following description, the same members and the like may be given the same reference numerals and their explanations may be omitted.

FIG. 1 is an external perspective view of one form of the hinge cap of the present invention. Moreover, FIG. 2 is a longitudinal sectional view of one form of the hinge cap of the present invention. The hinge cap 1 of this embodiment includes a cap body 10 and an upper lid 20 formed by molding a plastic resin. The cap body 10 has a top plate part 11, which is typically approximately circular, and a cylindrical side wall 12 extending vertically from the periphery of the top plate part 11, which matches the shape of the mouth of a container such as a glass bottle. The upper lid 20 has a shape that covers the cap body 10, and is connected to the cap body 10 via a hinge 23. The upper lid 20 can be opened and closed by rotating around the hinge 23 as shown by arrow A. There is. Further, a locking portion 22 is provided on the side opposite to the hinge 23 in the diametrical direction, and can be locked to the cap body 10 when the top lid 20 is closed. The upper lid 20 is provided with a vertically cylindrical sealing part 21 that is inscribed in the spouting cylinder 18 and prevents the contents from spilling out from the spouting cylinder 18 when the upper lid 20 is closed.

The cap body 10 has a tip 31 at the mouth of the container 3 between an undercut portion 19 provided on the inner surface of the lower end of the cylindrical side wall 12 and an inner ring 17 cylindrically suspended inside the cylindrical side wall 12. The container 3 is attached to the container 3 by fitting the container 3 with a stopper.

On the top plate part 11, a thin opening part 13 having a closed figure shape that partitions a portion that serves as a spout for the contents surrounds, and an opening pull ring is erected inside the thin opening part 13 via a support 14b. 14 is provided, and is provided near the cylindrical side wall 12 so as to go around the outside of the thin opening portion 13, and its both ends reach the lower end 12e in a form that longitudinally traverses the cylindrical side wall 12 on the opposite side of the hinge 23. A thin separation portion 15 and a separation pull ring 16 are provided outside the opening thin portion 13 and inside the separation thin portion 15 via struts 16b. It is preferable that the separation pull ring 16 has a larger diameter than the opening pull ring 13 because this makes it easier to pull each pull ring separately and also makes it easier to provide a pouring tube to be described later.

At this time, if the diameter of the annular part, which is the part where the separating thin wall part 15 goes around the outside of the opening thin wall part 13, is made larger than the outer diameter of the inner ring 17, the separating thin wall part 15 can be made larger than the outer diameter of the inner ring 17. It is preferable that when the inner ring 17 is broken along the portion 15, the inner ring 17 can also be removed.

A pouring tube 18 is also erected on the top plate 11, outside the opening thin section 13 and inside the separation thin section 15. The pouring tube 18 is also erected so that it is inside the ring of the separation pull ring 16 and outside the ring of the opening pull ring 14. The pouring tube 18 serves as a guide when pouring the contents, and prevents the contents from spilling onto parts other than the pouring tube 18 and causing soiling.

At this time, if the height h of the separating pull ring 16 from the top plate 11 is set lower than the similar height H of the spouting tube 18, when pouring out the contents from the spouting tube 18, the contents This is preferable since there is no risk of objects coming into contact with the separation pull ring 16.

The method for forming the opening thin-walled portion 13 and the separation thin-walled portion 15 is not particularly limited, and they can be formed by appropriately adopting known methods such as thin-walled molding as shown in the figure, weakening processing using a laser, half-cut processing, scratch processing, etc. Furthermore, these processes may be performed on either the upper or lower side of the top plate portion, or they may be formed on both. The same applies to the cylindrical side wall 12, and they may be provided on either the outside or inside of the cylindrical side wall 12, or they may be formed on both.

Figure 3 is a vertical cross-sectional view illustrating how to open the spout of one embodiment of the hinge cap of the present invention. When opening the hinge cap 1 to remove the contents, the top cover 10 is rotated around the hinge 23 to open it, and the opening pull ring 14 is pulled by hooking a finger 4 on it, causing it to break along the opening thin portion 13, removing part of the top plate portion 11 together with the opening pull ring 14, and opening the spout.

When discarding the contents after use, as shown in FIG. Since a part of the top plate part 11, the pouring tube 18, and the inner ring 17 can be removed, and a part of the cylindrical side wall 12 can also be removed, the hinge cap 1 and the container 3 can be easily separated after that, and the hinge cap 1 and the container 3 can be easily separated. Even when the cap 1 and the container 3 are made of different materials, such as a plastic resin molded product and a glass bottle, they can be easily separated and disposed of.

FIG. 5 is an explanatory diagram, viewed from above, of the process of opening and removing one form of the hinge cap of the present invention as described above. The figure on the left shows an unopened state, with neither the opening pull ring 14 nor the separating pull ring 16 removed, and the top plate portion 11 remaining unbroken. The center view shows a state in which the opening pull ring 14 is pulled, broken and removed along the opening thin part 13, and a spout 13b is formed. The contents can be poured out from the spout 13b.

In the figure on the right, the separation pull ring 16 is further pulled to break along the separation thin wall portion 15 and removed, and the top plate portion 11 is cut wider, and the break occurs at the lower end 12e of the cylindrical side wall 12. At this point, a portion of the cylindrical side wall 12 is cut away on the opposite side of the hinge 23, forming a gap 15b. As a result, since the inner ring 17 has also been removed from the remaining cylindrical side wall 12, the gap 15b can be easily widened by pulling it by hand, and the container can be removed from the mouth of the container.

Note that since the area around the hinge 23 is structurally difficult to deform, the cylindrical side wall 12 can be easily deformed if the gap 15b is formed on the opposite side from the hinge 23. Therefore, it is preferable that the struts 16b of the separation pull ring 16 are erected on the side of the hinge 23 of the top plate portion 11 because it is easier to form the gap 15b on the side opposite to the hinge 23.

FIG. 6 is a longitudinal sectional view showing another form of the hinge cap of the present invention. The hinge cap 2 of this embodiment is exemplified without a pouring tube and a stopper, and in this case, the height H2 of the separation pull ring 16 from the top plate 11 is the height h2 of the opening pull ring 14. If it is equal to or greater than that, it is preferable that the content is less likely to come into contact with the separation pull ring 16 when the content is poured out from the spout.

As explained above, according to the hinge cap of the present invention, when discarding the contents after use, the container such as a bottle and the hinge cap can be easily separated, and separate disposal can be easily performed.

1, 2... Hinge cap 3... Container 4... Finger 10... Cap body 11... Top plate part 12... Cylindrical side wall 13... Thin wall part for opening 13b... Note Outlet 14... Pull ring for opening 15... Thin wall part for separation 16... Pull ring for separation 17... Inner ring 18... Spout cylinder 19... Undercut part 20... Top lid 21. ... Sealing part 22 ... Locking part 23 ... Hinge

Claims (5)

The cap body has a top plate portion and a cylindrical side wall extending vertically from the periphery of the top plate portion, and an upper lid connected to the cap body via a hinge, the cap body fitting into the tip of the container mouth portion. A hinged cap that is attached to a container,
The top plate has an opening thin part that defines a portion that serves as a spout for contents, an opening pull ring that is erected on the inside of the opening thin part via a support, and an outside of the opening thin part. a separating thin wall part that is provided in the vicinity of the cylindrical side wall in a manner that goes around the cylindrical side wall, and has both ends extending longitudinally across the cylindrical side wall on the opposite side of the hinge and reaches a lower end; A separation pull ring is installed inside the separation thin-walled part via a support .
A cylindrical inner ring is provided inside the cylindrical side wall and extends vertically from the top plate part, and the tip of the container mouth part is formed to fit between the cylindrical side wall and the inner ring. ,
The diameter of the annular portion of the thin separation portion is larger than the outer diameter of the inner ring, and the annular portion of the thin separation portion is formed outside the inner ring and inside the cylindrical side wall;
A hinge cap characterized in that the support of the separation pull ring is connected to a portion of the top plate part that is inside the separation thin part . The hinge cap according to claim 1, wherein the separation pull ring has a larger diameter than the opening pull ring. A spout tube is installed upright between the opening thin wall portion and the separation thin wall portion of the top plate portion, and the spout tube is located inside the ring of the separation pull ring and outside the ring of the opening pull ring. The hinge cap according to claim 1 or 2, wherein the hinge cap is erected so as to be erected. The hinge cap according to claim 3, wherein the height of the separation pull ring from the top plate portion is lower than the spout tube. The hinge cap according to any one of claims 1 to 4 , wherein the support of the separation pull ring is erected on the hinge side.